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SB (Speculative Barrier) is only mandatory from 8.5 onwards but is optional from Armv8.0-A. This patch adds a command line option to enable SB, as it was previously only possible to enable by selecting -march=armv8.5-a. This patch also renames FeatureSpecRestrict to FeatureSB. Reviewed By: olista01, LukeCheeseman Differential Revision: https://reviews.llvm.org/D55990 llvm-svn: 350299
16 lines
794 B
ArmAsm
16 lines
794 B
ArmAsm
// RUN: llvm-mc -triple armv8 -show-encoding -mattr=+sb < %s | FileCheck %s
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// RUN: llvm-mc -triple armv8 -show-encoding -mattr=+v8.5a < %s | FileCheck %s
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// RUN: not llvm-mc -triple armv8 -show-encoding -mattr=-sb < %s 2>&1 | FileCheck %s --check-prefix=NOSB
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// RUN: llvm-mc -triple thumbv8 -show-encoding -mattr=+sb < %s | FileCheck %s --check-prefix=THUMB
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// RUN: llvm-mc -triple thumbv8 -show-encoding -mattr=+v8.5a < %s | FileCheck %s --check-prefix=THUMB
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// RUN: not llvm-mc -triple thumbv8 -show-encoding -mattr=-sb < %s 2>&1 | FileCheck %s --check-prefix=NOSB
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// Flag manipulation
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sb
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// CHECK: sb @ encoding: [0x70,0xf0,0x7f,0xf5]
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// THUMB: sb @ encoding: [0xbf,0xf3,0x70,0x8f]
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// NOSB: instruction requires: sb
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// NOSB-NEXT: sb
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